[1] Vanderbilt Univ, Sch Med, Dept Pediat, Nashville, TN 37235 USA
[2] Monroe Carell Jr Childrens Hosp Vanderbilt, Nashville, TN 37232 USA
[3] Albert Einstein Coll Med, Pediat, Bronx, NY 10461 USA
[4] Childrens Hosp Montefiore, Pediat Cardiol, Bronx, NY 10467 USA
[5] Stanford Univ, Pediat & Courtesy BioEngn, Stanford, CA 94305 USA
[6] Lucile Packard Childrens Hosp, Pediat Pulm Hypertens Serv, Dunlevie Family Chair Pulm Vasc Dis, Stanford, CA USA
[7] Univ Colorado, Sch Med, Pediat Cardiol, Boulder, CO 80309 USA
[8] Univ Colorado, Sch Med, Pediat Cardiol, Boulder, CO 80309 USA
[9] Univ Colorado, Sch Med, Pediat, Boulder, CO 80309 USA
[10] Boston Childrens Hosp, Cardiol, Boston, MA 02115 USA
[11] Boston Childrens Hosp, Pulm Hypertens Program, Dept Cardiol, Boston, MA 02115 USA
[12] Harvard Univ, Med Sch, Pediat, Cambridge, MA 02138 USA
[13] Childrens Med Ctr, Dallas, TX 75235 USA
[14] Ann & Robert H Lurie Childrens Hosp, Heart Transplantat & Heart Failure, Chicago, IL 60611 USA
[15] Ann & Robert H Lurie Childrens Hosp, Chicago, IL 60611 USA
[16] Northwestern Univ, Feinberg Sch Med, Pediat, Evanston, IL 60208 USA
[17] Stanford Univ, Lucille Packard Childrens Hosp, Pediat, Stanford, CA 94305 USA